Depois do Tabaco, EUA Preparam Ataque de Impostos a Refrigerantes

The study is being released as a recent wave of proposals would raise soda taxes or create new ones on sugared beverages. But they'll have to be a lot steeper than current taxes, which are generally 4 percent or less, said Roland Sturm, lead author of the new research.

"Small taxes will not prevent obesity," said Sturm, a senior economist at the Rand Corp. in Santa Monica, Calif.

"Taxes have to be large enough to affect consumption," said Brownell, who has called for a tax as high as 12 percent."
FoxNews